have field experience, hands-on, and this is a hypothesis, but it's almost certain that he learned this stuff in dagestan or chechnya. >> so bob, let me push back on that, because there are people who say a lot of this information is stuff you can get on the internet, how to construct these bombs, it's possible they tested bombs here, isn't it? >> anderson, not in massachusetts. you know, on these fuses on the grenades, improvised grenades, how do you light them? under pursuit? i mean, you would have to know to use the car lighter, you would have to know how long the fuse was. i've spent the last week talking to people who build these things for a living, and every one of them has said no, you cannot pick this stuff up on the internet and make it all work. yes, a lot of it's there, but not to this degree. i just don't believe it. this is speculation at this point, and they may have gotten lucky but i don't think so.